Machine tool guide rail unloading mechanism

Abstract

The utility model relates to the technical field of machine tool accessories, and discloses a machine tool guide rail unloading mechanism which comprises a wheel carrier and inclined iron, a plurality of idler wheels are installed at the lower end of the wheel carrier, the rolling direction of the idler wheels is consistent with the moving direction of a machine tool moving part, and the inclined iron is installed at the lower end of the machine tool moving part. The inclined iron and the upper end of the wheel carrier are movably assembled, and a gap exists between the inclined iron and the upper end of the wheel carrier. The idler wheels are installed at the lower end of the wheel carrier, the rolling direction of the idler wheels is consistent with the moving direction of a machine tool moving part, part of pressure is transmitted to the auxiliary guide rail through the idler wheels, unloading of the main guide rail is achieved, and meanwhile the elastic displacement assembly between the inclined iron and the wheel carrier can adjust unloading pressure. Adjustment can be carried out according to the weight of a machine tool moving part and actual requirements, pressure borne by the guide rail is effectively relieved, guide rail abrasion is relieved, and the service life of the guide rail is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of machine tool accessories technology, specifically to a machine tool guide rail unloading mechanism. Background Technology

[0002] With the development of industrial technology, heavy machine tools are becoming increasingly common, and the weight of moving parts can sometimes be very large, which may cause excessive pressure on the machine tool guideways. For guideways (especially sliding guideways), the greater the pressure, the faster the machine tool guideways wear, the worse the accuracy retention, and the more prone the moving parts are to creeping during movement. This leads to a decrease in the machine tool's motion sensitivity and dynamic accuracy, a decrease in machine tool machining accuracy and surface quality, an increase in power consumption, and a shortened service life of the machine tool. Therefore, for relatively large moving parts of machine tools, it is necessary to unload the machine tool guideways.

[0003] Currently, most machine tool guide rail unloading mechanisms used by machine tool manufacturers are of traditional structural design, which involves inserting a single roller into a groove in the middle of the guide rail of the machine tool's moving parts. This design has poor load-bearing capacity, and the moving parts of the machine tool are large in size, making them inconvenient to process, difficult to install, and hard to adjust. During maintenance, the moving parts of the machine tool need to be disassembled and reassembled, which is time-consuming, labor-intensive, and uneconomical. In view of the above problems that need to be solved, a machine tool guide rail unloading mechanism is designed to meet the unloading needs of the larger moving parts of the machine tool. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a machine tool guide rail unloading mechanism.

[0005] The present invention proposes a machine tool guide rail unloading mechanism, including a wheel frame and a wedge. Several rollers are installed at the lower end of the wheel frame, and the rolling direction of the rollers is consistent with the moving direction of the machine tool moving parts. The wedge is installed at the lower end of the machine tool moving parts, and the wedge is movably assembled with the upper end of the wheel frame with a gap. An elastic displacement component is installed in the gap to adjust the unloading pressure.

[0006] As a further optimization of this utility model, the wheel frame, as a component that supports the rollers and connects the wedges, provides basic support for the entire unloading mechanism. The rollers installed at the lower end of the wheel frame roll in the same direction as the moving parts of the machine tool. In this way, when the moving parts of the machine tool move, the rollers can roll on the auxiliary guide rail, transferring part of the pressure that was originally directly borne by the main guide rail to the auxiliary guide rail through the rolling of the rollers, thereby achieving the unloading effect on the main guide rail.

[0007] The wedge is installed at the lower end of the machine tool's moving parts. It is movably assembled with the upper end of the wheel frame with a gap. This gap provides installation space for the elastic displacement component. The elastic displacement component can adjust the unloading pressure according to the actual situation. For example, when the machine tool's moving parts are heavy, the unloading pressure can be increased by adjusting the elastic displacement component to reduce the burden on the main guide rail. When the moving parts are light, the unloading pressure can be appropriately reduced to ensure the stability and accuracy of the machine tool's operation. This design can effectively reduce the pressure on the main guide rail, slow down guide rail wear, and extend the service life of the guide rail.

[0008] As a further optimized solution of this utility model, the elastic displacement component includes a movable rod, a washer, and a butterfly spring. The movable rod is slidably mounted on the wheel frame and perpendicular to the machine tool guide rail. The washer is installed on the upper end face of the wheel frame. The butterfly spring is set between the wedge and the washer. The upper end of the movable rod passes through the washer and the butterfly spring and is threaded to the bottom of the wedge. The lower end of the movable rod extends to the bottom of the wheel frame and is equipped with a baffle.

[0009] The movable rod slides on the wheel frame and is perpendicular to the machine tool guide rail, providing vertical support and displacement guidance for the disc spring and wedge. The shim is installed on the upper end face of the wheel frame, mainly to protect the surface of the wheel frame and disperse the pressure of the disc spring. The disc spring is located between the wedge and the shim and is a key component for adjusting the unloading pressure.

[0010] When the weight of the moving parts of the machine tool acts on the wedge, the wedge compresses the disc spring downwards. The disc spring undergoes elastic deformation under pressure, pushing the movable rod to slide downwards. The upper end of the movable rod is threadedly connected to the bottom of the wedge. By rotating the movable rod, the compression degree of the disc spring can be adjusted, thereby adjusting the unloading pressure. The baffle at the lower end of the movable rod can prevent the movable rod from falling off the wheel frame, ensuring the normal operation of the entire elastic displacement assembly.

[0011] This structural design can reasonably distribute the weight of moving parts, reduce the pressure on the main guide rail, avoid the occurrence of crawling, and improve the smoothness and sensitivity of the movement of machine tool moving parts.

[0012] As a further optimization of this utility model, a sleeve hole adapted to the movable rod is provided on the wheel frame. The outer wall of the movable rod is slidably connected to the inner wall of the sleeve hole. The diameter of the sleeve hole is smaller than the width of the baffle at the lower end of the movable rod, and the distance between the baffle and the machine tool guide rail is greater than the maximum compression of the disc spring.

[0013] The sleeve hole on the wheel frame is adapted to the movable rod, providing precise guidance for the sliding of the movable rod and ensuring that the movable rod can only move in the vertical direction, thus ensuring the accuracy of the unloading pressure adjustment. The diameter of the sleeve hole is smaller than the width of the baffle at the lower end of the movable rod, which can prevent the movable rod from coming out of the sleeve hole and ensure the stability of the entire elastic displacement assembly.

[0014] The distance between the baffle and the machine tool guide rail is greater than the maximum compression of the disc spring. This is to ensure that when the disc spring is compressed to its maximum extent, the movable rod will not interfere with the machine tool guide rail, thus avoiding damage to the machine tool guide rail and the unloading mechanism. This ensures that the unloading mechanism can operate safely and stably under various working conditions.

[0015] As a further optimization of this utility model, guide grooves are provided on both the front and back of the wedge, and guide plates are installed on the upper ends of both the front and back of the wheel frame. The guide plates correspond to the guide grooves and are slidably assembled.

[0016] The guide grooves on the front and back of the wedge slide and are slidably fitted with the guide plates at the upper ends of the front and back of the wheel frame. This design restricts and guides the relative movement between the wedge and the wheel frame, so that the wedge can only move up and down along the mating direction of the guide groove and the guide plate, ensuring the stability and accuracy of the wedge in the process of transmitting pressure and adjusting unloading pressure.

[0017] Meanwhile, when the wedge needs to be adjusted back and forth on the moving parts of the machine tool, the cooperation of the guide plate and the guide groove can drive the wheel frame to move back and forth synchronously, ensuring that the load-bearing capacity of each unloading mechanism is consistent, avoiding the situation of excessive or insufficient local force, and ensuring the stability and reliability of the entire unloading system.

[0018] As a further optimized solution of this utility model, the wheel frame has an internal movable groove for installing the roller. Both the upper and lower ends of the movable groove are open. The roller is rotatably installed in the movable groove through a wheel axle and a needle roller bearing, and the outer periphery of the roller extends to the outside of the opening of the movable groove.

[0019] The movable groove inside the wheel frame provides installation space for the rollers. The design with openings at both the top and bottom facilitates the installation and maintenance of the rollers. The rollers are rotatably mounted in the movable grooves via axles and needle roller bearings. The needle roller bearings can reduce friction between the rollers and axles, allowing the rollers to rotate more smoothly and reducing energy loss.

[0020] The outer periphery of the roller extends to the outside of the opening of the movable slot, so that the roller can directly contact the machine tool guide rail and roll on the guide rail, effectively transferring part of the pressure of the moving parts of the machine tool to the guide rail, realizing the unloading function. At the same time, this installation method also makes it easy to replace the roller after wear, improving the maintainability of the unloading mechanism.

[0021] As a further optimized solution of this utility model, the axis of the wheel axle is perpendicular to the length direction of the machine tool guide rail, and the two ends of the wheel axle are fixedly connected to the inner walls of the two sides of the movable groove, respectively. The roller is rotatably mounted on the roller through a needle roller bearing.

[0022] The axis of the wheel axle is perpendicular to the length of the machine tool guide rail. This arrangement ensures that the rolling direction of the roller is consistent with the movement direction of the machine tool's moving parts, effectively transmitting pressure to the guide rail. Both ends of the wheel axle are fixedly connected to the inner walls of the movable groove, ensuring the stability of the wheel axle and thus ensuring the stable rotation of the roller. The roller is rotatably mounted on the wheel axle via needle roller bearings. The needle roller bearings not only reduce friction between the roller and the wheel axle but also improve the roller's load-bearing capacity, enabling the roller to better support the weight of the machine tool's moving parts and ensuring the normal operation of the unloading mechanism.

[0023] As a further optimization of this utility model, the wedge is L-shaped with its short side facing upwards. The lower end of the machine tool moving part is provided with a mounting groove that matches the wedge. The wedge is assembled into the mounting groove by fasteners. The fasteners include double-ended bolts and nuts. The double-ended bolts are assembled on the short side of the L-shape of the wedge and are set horizontally. The long side of the L-shape of the wedge is assembled into the mounting groove. The short side of the L-shape of the wedge is attached to the outside of the machine tool moving part and is fixed by the double-ended bolts and nuts.

[0024] The L-shaped design of the wedge allows it to better fit with the machine tool's moving parts. The short side facing upwards facilitates connection with the wheel frame and installation of the elastic displacement component. The mounting groove at the lower end of the machine tool's moving parts is compatible with the wedge, providing an accurate installation position. Double-ended bolts and nuts serve as fasteners, making the installation process simple and convenient. The double-ended bolts are horizontally assembled on the short side of the L-shape of the wedge, the long side of the L-shape of the wedge is inserted into the mounting groove, and the short side of the L-shape fits against the outside of the machine tool's moving parts. Then, the nuts are tightened to firmly fix the wedge to the machine tool's moving parts. This installation method is not only convenient to install, but also facilitates disassembly and reinstallation when maintenance or adjustment of the unloading mechanism is required, saving time and labor costs.

[0025] As a further optimized solution of this utility model, the upper surface of the long side of the wedge is a slope, and the upper end of the slope faces the short side of the L-shape. The upper side of the inner cavity of the mounting groove is a slope and is adapted to the slope of the long side of the wedge.

[0026] The L-shaped long side of the wedge and the inclined surface design of the upper side of the mounting groove increase the contact area and friction between the wedge and the moving parts of the machine tool, making the wedge more stable after installation. When the weight of the moving parts of the machine tool is applied to the wedge, the inclined surface structure can better distribute the pressure and avoid local stress concentration. At the same time, this inclined surface design also facilitates the installation and adjustment of the wedge. During the installation process, simply insert the L-shaped long side of the wedge along the inclined surface of the mounting groove to achieve accurate installation, improving installation efficiency and accuracy.

[0027] As a further optimization of this utility model, the number of rollers is multiple, and the multiple rollers are evenly distributed along the length direction of the wheel frame;

[0028] Multiple rollers are evenly distributed along the length of the wheel frame, increasing the contact points with the guide rail. Compared to a single roller, multiple rollers can more evenly bear the weight of the machine tool's moving parts, improving the load-bearing capacity of the unloading mechanism. During the movement of the machine tool's moving parts, the evenly distributed rollers can transmit pressure more evenly to the guide rail, avoiding uneven wear of the guide rail due to excessive local pressure. At the same time, the design of multiple rollers can also improve the stability of the unloading mechanism. Even if one roller fails, the other rollers can continue to work, ensuring the basic function of the unloading mechanism and improving the reliability of the equipment.

[0029] As a further optimization of this utility model, there are multiple unloading mechanisms, which are symmetrically distributed at the bottom of the moving parts of the machine tool.

[0030] Multiple unloading mechanisms are symmetrically distributed at the bottom of the machine tool's moving parts, further enhancing the overall load-bearing capacity and stability. The symmetrical distribution allows the weight of the machine tool's moving parts to be more evenly distributed across the unloading mechanisms, avoiding uneven force distribution. Under different working conditions, whether the center of gravity of the machine tool's moving parts changes or they are subjected to external forces in different directions, the symmetrically distributed unloading mechanisms can adapt better, ensuring the smooth operation of the machine tool's moving parts. This design enables the unloading mechanisms to adapt to machine tool moving parts of different weights and working conditions, expanding their application range and improving the overall performance of the machine tool.

[0031] The machine tool guide rail unloading mechanism proposed in this utility model has the following beneficial effects:

[0032] (i) By installing rollers at the lower end of the wheel frame, with the rollers rolling in the same direction as the moving parts of the machine tool, some of the pressure is transmitted to the auxiliary guide rail through the rollers, thereby unloading the main guide rail. At the same time, the elastic displacement component between the wedge and the wheel frame can adjust the unloading pressure, which can be adjusted according to the weight of the moving parts of the machine tool and the actual needs, effectively reducing the pressure on the main guide rail, slowing down guide rail wear, and extending the service life of the guide rail.

[0033] (ii) The pressure is transmitted to the disc spring through the wedge. The disc spring deforms under pressure, and the moving rod slides down. This can reasonably distribute the weight of the moving parts, reduce the pressure on the main guide rail, avoid the occurrence of crawling, improve the smoothness and sensitivity of the machine tool's moving parts, and the stable motion state helps to improve the dynamic accuracy of the machine tool and ensure the relative positional accuracy between the tool and the workpiece during the machining process, thereby improving the machining accuracy and surface quality and producing higher quality products.

[0034] (III) The wedge is installed at the lower end of the machine tool moving part by double-headed bolts and nuts. The installation process is simple and convenient. The wheel frame and the wedge are slidably assembled through the guide plate and guide groove, so that the wedge can only move up and down. When the wedge is adjusted back and forth on the machine tool moving part, it drives the wheel frame to move back and forth synchronously, ensuring that the load of the unloading mechanism is consistent at all points. Moreover, the movable rod can be adjusted by rotation, which makes it convenient to adjust the unloading pressure according to the actual situation. During maintenance, there is no need to disassemble and reassemble the machine tool moving part. Only the unloading mechanism itself needs to be inspected and maintained, which saves time and labor costs and is more economical.

[0035] (iv) The design of multiple rollers evenly distributed along the length of the wheel frame increases the contact points with the guide rail, improves the load-bearing capacity, and can better bear the weight of heavy machine tool moving parts. In addition, multiple unloading mechanisms are symmetrically distributed at the bottom of the machine tool moving parts, which further enhances the overall load-bearing capacity and stability, enabling it to adapt to machine tool moving parts of different weights and working conditions, and has a wider range of applications.

[0036] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0037] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0038] Figure 2 This is a front structural diagram of the present invention;

[0039] Figure 3 This is a front sectional view of the present invention.

[0040] Figure 4 This is a schematic diagram of the assembly structure of the present invention and the moving parts of the machine tool.

[0041] Figure descriptions: 1. Wheel frame; 2. Wedge; 3. Roller; 4. Movable rod; 5. Washer; 6. Butterfly spring; 7. Wheel axle; 8. Needle roller bearing; 9. Double-ended bolt; 10. Nut; 11. Guide groove; 12. Guide plate. Detailed Implementation

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0043] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] In the field of machine tool parts technology, this utility model addresses the problem of excessive pressure on guide rails by moving parts in heavy-duty machine tools, leading to rapid guide rail wear and decreased accuracy. Through a unique structural design and the coordinated operation of its components, the machine tool guide rail unloading mechanism effectively unloads the main guide rail, improving the machine tool's performance and service life. The details are as follows:

[0045] like Figure 1 As shown, the unloading mechanism mainly consists of a wheel frame 1, a wedge 2, rollers 3, and an elastic displacement component. The wheel frame 1 serves as the basic support component, and several rollers 3 are installed at its lower end. The rolling direction of these rollers 3 is consistent with the moving direction of the machine tool moving parts. The multiple rollers 3 are evenly distributed along the length of the wheel frame 1. This design increases the contact points with the guide rail, allowing the pressure to be transmitted more evenly to the auxiliary guide rail, improving the load-bearing capacity of the unloading mechanism, and avoiding uneven wear of the guide rail due to excessive local pressure.

[0046] like Figure 1 and Figure 4 As shown, the wedge 2 is installed at the lower end of the machine tool moving part. It is L-shaped with its short side facing upward. The lower end of the machine tool moving part has a mounting groove that matches the wedge 2. The long side of the L-shape of the wedge 2 is fitted into the mounting groove, and the short side of the L-shape is attached to the outside of the machine tool moving part. It is assembled and fixed by double-headed bolts 9 and nuts 10.

[0047] This installation method is simple and convenient. When maintenance or adjustment of the unloading mechanism is required, it is easy to disassemble and reinstall. The upper surface of the L-shaped long side of the wedge 2 is inclined, and the upper side of the inner cavity of the mounting groove is also an inclined surface that matches it. This not only increases the contact area and friction between the wedge 2 and the moving parts of the machine tool, making the wedge 2 more stable, but also better disperses the pressure and avoids local stress concentration. It also facilitates the installation and adjustment of the wedge 2.

[0048] like Figures 1-3 As shown, the wedge 2 is movably assembled with the upper end of the wheel frame 1 with a gap, and an elastic displacement component is installed in the gap;

[0049] like Figure 3As shown, the elastic displacement assembly includes a movable rod 4, a washer 5, and a disc spring 6. The movable rod 4 is slidably mounted on the wheel frame 1 and perpendicular to the machine tool guide rail. The wheel frame 1 has a sleeve hole that matches the movable rod 4. The outer wall of the movable rod 4 is slidably connected to the inner wall of the sleeve hole. The design of the sleeve hole provides precise guidance for the sliding of the movable rod 4, ensuring that the movable rod 4 can only move in the vertical direction, ensuring the accuracy of the unloading pressure adjustment. At the same time, the diameter of the sleeve hole is smaller than the width of the baffle at the lower end of the movable rod 4, preventing the movable rod 4 from coming out of the sleeve hole and ensuring the stability of the entire elastic displacement assembly.

[0050] The shim 5 is installed on the upper end face of the wheel frame 1 to protect the surface of the wheel frame 1 and disperse the pressure of the disc spring 6. The disc spring 6 is set between the wedge 2 and the shim 5 and is a key component for adjusting the unloading pressure. When the weight of the machine tool moving part acts on the wedge 2, the wedge 2 compresses the disc spring 6 downward. The disc spring 6 undergoes elastic deformation under pressure, pushing the movable rod 4 to slide downward. By rotating the movable rod 4, the compression degree of the disc spring 6 can be adjusted, thereby adjusting the unloading pressure to adapt to machine tool moving parts of different weights.

[0051] The distance between the baffle at the lower end of the movable rod 4 and the machine tool guide rail is greater than the maximum compression of the disc spring 6, ensuring that the movable rod 4 will not interfere with the machine tool guide rail when the disc spring 6 is compressed to its maximum extent, thus ensuring that the unloading mechanism can operate safely and stably under various working conditions.

[0052] like Figure 1 and Figure 2 As shown, in order to ensure the stability and accuracy of the relative movement between the wedge 2 and the wheel frame 1, guide grooves 11 are provided on both the front and back sides of the wedge 2, and guide plates 12 are installed on the upper ends of both the front and back sides of the wheel frame 1. The guide plates 12 correspond to the guide grooves 11 and are slidably assembled.

[0053] This design restricts and guides the relative movement between the wedge 2 and the wheel frame 1, so that the wedge 2 can only move up and down along the mating direction of the guide groove 11 and the guide plate 12. When the wedge 2 needs to be adjusted back and forth on the moving parts of the machine tool, the mating of the guide plate 12 and the guide groove 11 can drive the wheel frame 1 to move back and forth synchronously, ensuring that the load-bearing capacity of the unloading mechanism is consistent and avoiding the situation of excessive or insufficient local force.

[0054] like Figure 3As shown, the roller 3 is rotatably mounted in the movable groove inside the wheel frame 1 via the wheel axle 7 and needle roller bearing 8. Both ends of the movable groove are open to facilitate the installation and maintenance of the roller 3. The axis of the wheel axle 7 is perpendicular to the length direction of the machine tool guide rail, and its two ends are fixedly connected to the inner walls of the two sides of the movable groove. The roller 3 is rotatably mounted on the wheel axle 7 via the needle roller bearing 8. The needle roller bearing 8 reduces the friction between the roller 3 and the wheel axle 7, allowing the roller 3 to rotate more smoothly, reducing energy loss, and improving the load-bearing capacity of the roller 3. This ensures the stable rotation of the roller 3 and effectively transmits part of the pressure of the moving parts of the machine tool to the guide rail, thus achieving the unloading function.

[0055] In addition, such as Figure 4 As shown, there are usually multiple unloading mechanisms, which are symmetrically distributed at the bottom of the machine tool moving parts. This symmetrical distribution design further enhances the overall load-bearing capacity and stability, and makes the weight of the machine tool moving parts more evenly distributed on each unloading mechanism, adapting to machine tool moving parts of different weights and working conditions, and expanding its application range.

[0056] During actual machine tool operation, when the moving parts of the machine tool move, the roller 3 rolls on the auxiliary guide rail, transferring some of the pressure from the main guide rail to achieve unloading. The elastic displacement component automatically adjusts the unloading pressure according to the weight of the moving parts, ensuring the smoothness and sensitivity of the moving parts of the machine tool, avoiding crawling, and improving the dynamic accuracy and machining accuracy of the machine tool. The guide structure between the wedge 2 and the wheel frame 1, as well as the coordinated work of multiple unloading mechanisms, ensure the reliability and stability of the entire unloading system. In terms of maintenance, due to the simple installation of the wedge 2 and the relative independence of each component, there is no need for complex disassembly and assembly of the moving parts of the machine tool. Only the unloading mechanism itself needs to be inspected and maintained, saving time and labor costs.

[0057] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A machine tool guide rail unloading mechanism characterized by comprising: The unloading mechanism comprises a wheel frame (1) and a slope iron (2), the lower end of the wheel frame (1) is provided with a plurality of rollers (3), the rolling direction of the rollers (3) is consistent with the moving direction of the machine tool moving part, the slope iron (2) is installed at the lower end of the machine tool moving part, the upper end of the slope iron (2) is movably assembled with the wheel frame (1) with a gap, and an elastic displacement assembly is installed in the gap to adjust the unloading pressure.

2. A machine tool guideway unloading mechanism according to claim 1, characterized in that, The elastic displacement assembly comprises a movable rod (4), a gasket (5) and a butterfly spring (6), the movable rod (4) is slidably assembled on the wheel frame (1) and is perpendicular to the machine tool guide rail, the gasket (5) is installed on the upper end surface of the wheel frame (1), the butterfly spring (6) is arranged between the slope iron (2) and the gasket (5), the upper end of the movable rod (4) penetrates through the gasket (5) and the butterfly spring (6) and is threadedly connected with the bottom of the slope iron (2), and the lower end of the movable rod (4) extends below the wheel frame (1) and is provided with a baffle.

3. A machine tool guideway unloading mechanism according to claim 2, characterised in that, A sleeve hole matched with the movable rod (4) is formed in the wheel frame (1), the outer wall of the movable rod (4) is slidably connected with the inner wall of the sleeve hole, the diameter of the sleeve hole is smaller than the width of the baffle at the lower end of the movable rod (4), and the distance between the baffle and the machine tool guide rail is greater than the maximum compression amount of the butterfly spring (6).

4. A machine tool guideway unloading mechanism according to claim 1, characterized by The front surface and the back surface of the slope iron (2) are provided with guide grooves (11), the upper end of the front surface and the back surface of the wheel frame (1) is provided with guide plates (12), and the guide plates (12) are correspondingly slidably assembled with the guide grooves (11).

5. A machine tool guideway unloading mechanism according to claim 1, characterized by The inside of the wheel frame (1) is provided with a movable groove for installing the rollers (3), the upper and lower ends of the movable groove are both open, the rollers (3) are rotatably installed in the movable groove through a wheel shaft (7) and a needle bearing (8), and the outer periphery of the rollers (3) extends to the outside of the opening of the movable groove.

6. A machine tool guideway unloading mechanism according to claim 5, characterised in that, The axis direction of the wheel shaft (7) is perpendicular to the length direction of the machine tool guide rail, the two ends of the wheel shaft (7) are fixedly connected with the inner walls of the two sides of the movable groove, and the rollers (3) are rotatably sleeved on the rollers (3) through the needle bearing (8).

7. A machine tool guideway unloading mechanism according to claim 1, characterized by The slope iron (2) is L-shaped and arranged with the short side upward, the lower end of the machine tool moving part is provided with a mounting groove matched with the slope iron (2), and the slope iron (2) is assembled at the mounting groove through a fastener; The fastener comprises a double-headed bolt (9) and a nut (10), the double-headed bolt (9) is assembled on the L-shaped short side of the slope iron (2) and arranged horizontally, the L-shaped long side of the slope iron (2) is assembled into the mounting groove, and the L-shaped short side of the slope iron (2) is attached to the outside of the machine tool moving part and assembled and fixed through the double-headed bolt (9) and the nut (10).

8. A machine tool guideway unloading mechanism according to claim 7, characterised in that, The upper surface of the L-shaped long side of the slope iron (2) is an inclined surface, the upper end of the inclined surface faces the L-shaped short side, the inner cavity of the mounting groove is an inclined surface and is matched with the inclined surface of the L-shaped long side of the slope iron (2).

9. A machine tool guideway unloading mechanism according to claim 1, characterized by The number of the rollers (3) is multiple, and the multiple rollers (3) are uniformly distributed along the length direction of the wheel frame (1).

10. A machine tool guideway unloading mechanism according to any one of claims 1 to 9, wherein The number of the unloading mechanisms is multiple, and the multiple unloading mechanisms are symmetrically distributed at the bottom of the machine tool moving part.

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